Web-cutting mechanism for envelop-machines and similar machines.



c. B.SANDERS, WEB CUTTING MECHANISM FOR ENVELOP MACHINES AND SIMILARMACHINES.

APPLICATION FILED MAY 14, I914;

' Patented Jan. 25, 1916.

4 SHEETSSHEET I.

WW: avwe who? C. B. SANDERS.

WEB CUTTING MECHANISM F0 8 ENVE'LO P MACHINES ANI) SIMILAR MACHINES.APPLICATION FILED MAY 14, I9I4. 1,169,197.

Patented Jan.2 5, l9l6.

4 SHEETSSHEET 2.

C.B.SANDERS, 'WEB CUTTING MECHANISM FOR ENVELOP MACHINES AND SIMILARMACHINES.

APPLICATION FILED MAY I4, I9I4.

1,169,197. I 1 Patented Jan. 25, 1916 4 SHEETSSHEET 3- C. B. SANDERS.WEB CUTTING MECHANISM FOR ENVELOP MACHINES AND SIMILAR MACHINES.

APPLICATION FILED MAY 14, I914. I 1,169,197, Patented Jan. 25, 1916.

4 SHEETS-SHEET 4.

5] vwe nboz UNITED STATES Parana carton PAPER COMPANY, OF NEW YORK, N.Y.,' A CORPORATION OF NEW JERSEY.

WEB-CUTTING- MECHANISM FOR ENVELOP-MACHINES AND SIMILAR MACHINES.

To all whom it may concern:

Be it known that I, CHARLES E. SANDERS, a citizen of the United States,and resident of Montclair, in the county of Essex and State of New,Jersey, have invented certain new and useful Improvements in-Web-Cutting Mechanism for Envelop-Machines and Simi-' lar Machines, ofwhich the following'is-a specification.

This invention relates to web cutting T mechanism of envelop machinesorsimilar machines for continuously moving webs, and has for its object toprovide means by which the cut or printed impression may be pro duced at,diflerently spaced intervals in the web without 'alteration of theprinting or cuttin roll. 1 i

A further object of my invention is to provide a mechanism ofthischaracter which v may be combined withhanenvelop machine to-produceenve'lops of different engths in one machine with simple changes inadjustment.

after described and Further objects of the invention reside inimprovements in the various details of construction of themechanism aswill be herelnpointed out in the appended vclaims.

In the accompanying drawings I have illustrated a preferred embodimentof my invention as combined, with an envelop ma-' chine and in the saiddrawings: Figure 1 isa"plan'r'yiew of my improved machine;

Fig. 2 is a longitudinal section of the same;

Fig. 3 is a side view of' a portion of the machine showing the drivinggears; Figs. 4,

5, 6 and 7' are detailed views of the cutter adjustingmechanism; Figs. 8and 9 are diagrammatic views showing theenvelop in its various stages ofmanufacture; Fig. 10 is a partial plan view of a modified machineshowing a printing as well as a cutting mechanism.

Referring now to the drawings 1 indicates the frame of the machine atone end of which is supported a roll of paper 2 from which envelopsareto be made. The paper from the roll passes around through theguiderollers 3, and thence between the pasting disk 1 and cooperatingroller 5. The pasting disk 4'runs in a paste tank 6 which is supportedon the machine frame and applies a line of paste on one edge of the webas it is continuously fed mto the machine;

Specification of Letters Patent. Patented Jan. 1916: Application filedMay 14, 1914. Serial No. 858,596.

After passing beyond '-.the roller 5 the webpasses between the edgecutting rolls 7 and 8, of which the bottom" roll 8 consists of ahardened steel cylinder, against which the knives on the roll 7 work incutting the web. As shown more particularly in Fig. 1 the knives carriedby the roll 7 comprise two nal knives 9, forming with the V-shaped 7CHARLES B. SANDERS, or MONTCLAIR, New JERSEY, nssreivon 'ro THE UNIONBAG &

slightly inclined but substantially longitudicircumferential knife 10 a.cutting die, cutting each edge of the paper the shape shown atainFig.8.

Beyondthe rolls 7 and 8. the web runs between the cooperating screasingrolls 11 and 12 which crease the web along the line b to form the sideflaps c and d. The'web then passesthrough the side folders 13 by meansof which the flaps c and (Z are laid one ever the other to form thebodyof the envelop. This folding mechanism I have not shown in detail, as itmay be of the kind known as fplowshare folders, and forms no mechanismcomprises plates properly shaped to lay or fold over the'flap as the webpasses beneath them. Beyond the side folders are arranged draw rolls 14and '15 by which the web of paper is drawn through the machine, theserolls being made. of any suitable construction to secure a sufficientgrip upon the paper. As shown the bottomroller 15 comprises a metalshell; while the upper roller consists of two disks whose periph- 4 partof the present invention. The folding eries are designed to grip thesurface of the lower roll. I

The end of the web as it leaves the drawing rolls is thrust between thecut off rolls 16 and 17 by means of'whieh the blanks are separated fromthe webalong the line e ,as shown in Fig.9. These rolls comprise a lowerhardened steel roller and upper roller carrying a knife of'proper shapeto 'give the -des ired--cut. yond the cutting.

rolls are arranged the bottom forming rolls which I'will later describe.

The shaft 18 of the lower cutting roll 17 constitutesthe driving shaftof the machine and is. extended beyond the machine frame to receive thefast and loose pulleys 18. The upper roll 16 is driven by means of apinion 19 between the frame 1 and the bearing oftheroll.

Attached to the shaft 18 beyond the frame is a pinion 32 which drivesthrough the gear 33, thepinion 34 on the shaft of the lower draw roll15. As shown in Fig. 3 the gear 33 is supported on a stub axle mountedfor adjustment on an arc concentric with the shaft 5 of' the lower drawro ll whereby by substituting pinions of different sizes for the pinion32 the speed of the draw rolls relative to the driving shaft may bevaried and consequently the speed of movement of the web increased ordecreased as desired. The purfpose of thisadjustment is tosecureenvelops I of different lengths. The length of'the envelop isobviously determined by the distance between the edge cuts effected bythe rolls 7 and'8, and this distance is'determiiied by the amount ofpaper fed for each revolution of the cutting rolls. It is obvious how-'ever that at the moment of cutting the sur face speed of the cuttingrolls at thei-rpoint of engagement must be equal to the speed of theweb, otherwise when the paper is gripped between the knives and thelower roll, the

pull of the paper by the more rapidly revolving draw rolls would tearthe paper and 25. cause an imperfect envelop; -'In' order therefore tovary the length of the envelop by J varying, the speed movement of theweb I have provided means for driving the cutting rolls in such a mannerthat the time requiredfor a complete revolution remains the same,

but the surface speed of the periphery of therollers 7 and 8 during themoment of cutting may be varied in synchronism with the 7 various speedsof the drawing rolls.

4 driving shaft by means of apinion 2 0 which drives through the idler21, the gear 22from which the edge cutting rolls are driven as will nowbe described.

I which may 1, on which is mounted a shaft 23 ofv a; hand be 'rotat'ablyadjusted by' means The 'ciitting rolls are driven from the Extendingbeneath concentric with the'shaft 30 the roller 27 and grooves 28 willact as a shaft coupling and drive the shaft 3Ov at the same speed as thegear 22. When the crank pin 26 is eccentric to the shaft 30, the shaft30 will still make 22, but during that portion ofthe revolution whichthe point of engagement of the roller 27 and the groove'28 is mostdistant from the center of the shaft 30, the speed of the shaft 30 willbe slower than that of the 1 gear in the ratio of the distances of theone revolution for each revolution of the gear roller 27 from the centerof the shaft and the center of the crank pin respectively. When theroller is at the point in its revolu 'tion-opposite the point shown inFig. 4, the speed of the shaft 30 will be greater than that of the gearin the same ratio. By arranging the intermediate gearing of the cuttingrolls so that the cutting takes place substantially at the instant inthe rotation of the shaft 30 that its speed is greatest, the speedduring the cutting can be adjusted by the hand wheel 24 to substantiallysynchronize with the speed of the web as varied by the change in gear32. To permitthe gear 22 to be adjusted as described, and to retain thedriving connection with the gear 20 the idler @21 is supported on astubbearing 21 mounted for adjustment in the machine frame on an arcconcentric with the gear 20.

The bottom forming mechanism forms no part of the invention of thepresent application and therefore has not been shown m j J detailand'comprises briefly a pair of creasing rolls 35, 36\ which creases ablank .along the line f of Fig. 9, add delivers it to the folding andpasting rolls 37 38, whichgrip the blank along the lineof theend fold,

the folder 13 is'a transverse bar of the frame pasting the flap againstthe body of the 05 7 blank to form the completed envelop as" shown at'Ein Fig. 9. The envelop is de-' wheel 24 and locked in its adjustedposition livered from the rolls 37, 38by means of a? by means of itssplit clamping bearings 25v asi stripper 39 through which the, envelopis 45 shown in Figs. 4and 5. The shaft 23 is pro; vided beyond itsbearing with a crank pin 26 whichforms a bearing for the gear 22. On

its face away from the shaft 23 the gear 22;

is provided with a roller'27 eccentrically dis- 50 posed with relationto the gear and operating in a diainetric groove 28 across the face of adisk 29 attached to a "shaft 30 mounted in ,fixed hearings on themachine frame. The shaft 30 is in the same horizontal plane as 56 theshaft 23 but is out of alinenient there- 66 It is obvious that when thecrank pin 26 is guided to the delivery belt 40.

The feed roller 5 is preferably driven with the draw rolls 14, 15 tohavethesame surface speed as the paper. As shown this roll is driventhrough; a side shaft 41 having a mitered gear on each end meshlng withmiter gears on the end of the lower draw roll shaft and the shaft of theroll-5 respectively. The creasing rolls 11,412 are also driven from theshaft 41, 'b'y,means of suitable miter gears 42, the shafts'of the rollsbeing connected by spur gears -o 1 1e of which is indicated at 43. Forconvemonce :in determining the proper adjustment of, the'cuttingmechanism the hand wheel 24 provided with a scale on its periphery withwhich cooperates the index pouiter 45 attached to the adjacent bearingsof the,

shaft 23. The scale may-be marked with numbers indicating the lengthofthe envelop to be formed, -Wh10h numbers W111 alsobe'stamped on thevarious that the two adjustments may be accurately obtained whenchanging-the length of the envelop without experiment.

- It will be obvious that my improved mechanism may be employedwithequal adting mechanism, and also a prlnting mechanism for. printinga return address or other legend upon each envelop. As here shown themachine is the same as in'Figs. l and2 except that the frame is the samein Figs.

' 1 and 2 except that the frame is elongated between the pasting roll 5and the cutting rolls 7 and 8. to provide space for the pair of printingrolls and 51. It will be understood that the upper roll constitutes theplaten, and the lower roll carries the,type, not shown. The shafts ofthe printing rolls are geared together at 54 and the shaft of the'lowerroll is extended b'eyondthe frame and provided with a miter gear drivenfrom a similar gear attached to the shaft 31 whereby the printingrollsand cutting rolls will-be driven arid adjusted in synchronism.

I-have described my invention in a detailin order that it may be fullyunderstood,

but my invention is of. course not limited to ,1 such deta ls ofconstruction, and, covers all such modifications oi the same as fallwithin the scope of the" appended claims. It

will also be understood that the invention is not limited to an envelopmachine, but as stated above, may be employed with equal advantage inany machine em ying a web cutting or printing mechanism.

Having thus described my invention, what I claim and desire to secure byLetters Patcut is 1. In a; machine of; the class described,

the combination of a pair of rollers for feed mg the web, means forcontinuously driv- ,ing said rollers at various speeds, a pair of gears32 so 4 shaft, a disk mounted on rollers carrying devices adapted toengage and operate upon said web at intervals inthe rotation of rollers,and means for driving said last mentioned rollers comprising a'variablespeed gearing whereby the surface speed of said rollers during theinterval of their engagement may be varied without varying the time ofrotation of said rollers, "said means comprising a rotatable crank, adisk driven thereby, and means for varying the relative positions ofthecenters of rotation of said crank and said 2. In a mechanism of theclass described, the combination of 'a pair of cooperating ,rolls, apair of draw rolls for feeding the web between said first mentionedrolls, means for driving said first mentioned rolls comprising a drivingmember having a crank pin, a driven disk having a transverse slotengaged by saidcrank pin, and means for bodily adjusting the shaft ofsaid driv, ing member relative to the center of rota tion of said drivendisk.

3. In a machine of the .class described, the .combination of a pair ofrolls, a pair of draw rolls forfeeding a web throughsaid first mentionedrolls, a driving shaft, a change gear between saiddriving shaft and saiddraw rolls, means for driving said first mentioned rolls comprising asupporting shaft having a stub axle eccentric thereto, a driving gearsupported on said stub axle and driven from said driving shaft, a drivenshaft out of alinement with said supporting said driven shaft and havinga transverse slot, a crank pin carried by said driving gear and engagingsaid slot, driving connections between said disk and said. rolls, andmeans for rotatably adjusting said supporting shaft and locking'the samein adjusted position.

.Signed at Montclair, in the county of day of Mav, 1914.

CHARLES B. Witnesses: I n y W. 0. Human, W. M. HOWELL.

SANDERS.

Essex and State of New Jersey, this 9th

